In the Minerva Mills case, the Supreme Court provided key clarifications on the interpretation of the basic structure doctrine. The court ruled that the power of the parliament to amend the constitution is limited by the constitution. Hence the parliament cannot exercise this limited power to grant itself an unlimited power. In addition, a majority of the court also held that the parliament's power to amend is not a power to destroy. Hence the parliament cannot emasculate the fundamental rights of individuals, and also includes the right to liberty and equality (which is not a fundamental right but considered a basic structure of the Constitution) .[4]
(5) For the removal of easy doubts, it is hereby declared that there shall
be no limitation whatever on the constituent power of Parliament to
amend by way of addition, variation or repeal the provisions of this
Constitution under this article.
The above clauses were unanimously ruled as unconstitutional. Chief Justice Y. V. Chandrachud explained in his opinion that since, as had been previously held in Kesavananda Bharati v. State of Kerala, the power of Parliament to amend the constitution was limited, it could not by amending the constitution convert this limited power into an unlimited power (as it had purported to do by the 42nd amendment).
Since the Constitution had conferred a limited amending power on the Parliament, the Parliament cannot under the exercise of that limited power enlarge that very power into an absolute power. Indeed, a limited amending power is one of the basic features of our Constitution and therefore, the limitations on that power can not be destroyed. In other words, Parliament can not, under Article 368, expand its amending power so as to acquire for itself the right to repeal or abrogate the Constitution or to destroy its basic and essential features. The donee of a limited power cannot by the exercise of that power convert the limited power into an unlimited one.[6]
Section 4 of the 42nd Amendment, had amended Article 31C of the Constitution to accord precedence to the Directive Principles of State Policy articulated in Part IV of the Constitution over the Fundamental Rights of individuals articulated in Part III of Indian Constitution. By a verdict of 4-1, with Justice P. N. Bhagwati dissenting, the court held section 4 of the 42nd Amendment to be unconstitutional.[3] Chief Justice Chandrachud wrote:
Three Articles of our Constitution, and only three, stand between the heaven of freedom into which Tagore wanted his country to awake and the abyss of unrestrained power. They are Articles 14, 19 and 21. Article 31C has removed two sides of that golden triangle which affords to the people of this country an assurance that the promise held forth by the preamble will be performed by ushering an egalitarian era through the discipline of fundamental rights, that is, without emasculation of the rights to liberty and equality which alone can help preserve the dignity of the individual, added art 368(4) & art 368(5) in indian constitution.[4]
^Hart, Henry C. (April 1980). "The Indian Constitution: Political Development and Decay". Asian Survey. 20 (4): 428–451. doi:10.2307/2643867. JSTOR2643867.